Smoke-consumer.



No. 703,048. Patented June 24, I902.

J. s. DONOHUE. SMOKE CONSUMER.

(Application filed Mar. 26, 1902.)

(No Model.)

[)zvenZZr [VIZ-71555 es 1 21K; rv w 14K H LH'HO. WASHINGTON n c UNITEDSTATES PATENT OFFICE.

JAMES S. DONOHUE, OF IVASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR OFONE-HALF TO PATRICK I. MORAN, OF GEORGETOWN, DISTRICT OF COLUMBIA.

SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 703,048, dated June 24,1902.

Application filed March 26, 1902. Serial No. 99,986. (No model.)

To aZZ whom, it ntcty concern:

Beit knownthatLJAMEsS.DoNoHUE,acitizen of the United States, residing atWashington, in the District of Columbia, have invented certain new andusefulImprovements in Smoke-Consumers; and I do declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to to make anduse the same, reference being had to the accompanying drawings, and tothe letters of reference marked thereon,which form a part of thisspecification.

My invention relates to devices for preventing the escape of smoke fromchimneys and smoke-stacks by which the carbon-charged gases are eitherconsumed or the sooty element is eliminated from them, so that the gaseswhen discharged from the chimney are substantially colorless. The meansby which this is accomplished are fully illustrated in the accompanyingdrawings, in which.

Figure 1 is a vertical section of part of a smoke-stack, showing a sideelevation, partly in section, of a portion of the invention locatedtherein. Fig. 2 is a front elevation of a smoke-stack, partly brokenaway and disclosing the arrangement of parts within. Fig. 3 is a plan ofthe upper diaphragm, partly broken away to show the steam-pipes justbeneath and the lower diaphragm; and Fig. 4: is an exterior rear view ofmyimprovement adapted to a smoke-channel of small diameter.

Like letters of reference denote correspond- 3 5 ing parts in thedifferent views.

The letterAindicates asmoke-stack, chimney, or other smoke-channel. Oneor more approximately vertical short fiues B, having a flaring mouthbopening downward,is placed in the stack. The upper end of the flue Bopens into a cross-flue C, having preferably an inclined section c and acap 0 on the end which projects through the stack. A drippipe D taps theflue C about its middle or just beyond the incline c and, extendingthrough the stack, is provided with a stop d.

F is an exit-flue opening upward from the line C through the diaphragmH, which extends entirely across the stack. As this diaphragm is tocompel the smoke to pass through the fines B it is evident that it maybe located below the cross-pipes, and I do not limit its locationto thatshown in the drawings. A steam-pipe G for each cross-flue enters thestack and the cross-flue and terminates at the bottom of the incline 0.Each steampipe is provided with a valve 1. Above the diaphragm H arearranged either crosswise or in a circle steam-pipes K, having vents 7cis opening downward,and above these another diaphragm I, provided withopenings t i.

V The lower system of fines and pipes should be located near to the fireand the upper system about the width of the stack above the lower.

In operation the heated vapor from the fire enters the flues B andpasses into the crossflues C, where it is treated to the jet of steam,commingled with which it passes through fines F into the space above thediaphragm H. Here it is again subjected to steam injected through anumber of small vents k, and finally ascending it passes out throughopenings v; i into the upper part of the stack free from all visiblecoloring-matter.

The lower level of flue C is cleaned through the opening covered by thecap 0, and any excess of moisture from the steam, as well as particlesof non-combustible matter, is carried off by the drip-pipes D.

The lower system offlues andpipes is ef fective in many conditionswithout the upper system; but when combined with the upper system thegases from the lowest grades of coal are rendered substantiallycolorless.

Having described the invention, what I claim, and desire to secure, is

l. A smoke-consumer comprising a smokestack, approximately verticalfines in said stack, cross flues connecting therewith, steam-pipes todischarge steam into said crossflues in the direction of the draft, adiaphragm across the stack near the cross-fines, and discharge-finesconnectingsaid crossflues, at a point beyond the steam-discharge, withthe space above said diaphragm, as described.

2. A smoke-consumer comprising a smokestack, approximately verticalfiues in said stack, cross-fines connecting therewith, drip- ICO pipesconnected with said cross-fines steampipes to discharge steam into saidcross-fines in the direction of the draft, a diaphragm across the stacknear the cross-fines and discharge-fines connecting said cross-fines, ata point beyond the steam-discharge with the space above said diaphragmas described.

In a smoke-consumer, a smoke-stack, vertical Hues in said stack,cross-fines connecting therewith, an inclined section in each of saidcross-fines, steam-pipes opening into said cross-fines, a diaphragmacross the stack and discharge-fines connected with said crossflues at apoint beyond their inclined sections and opening above said diaphragm,substantiall y as herein set forth.

4. A smoke-consumer comprising a smokestack, vertical fines therein,cross-fines con- JAMES S. DONOHUE.

Witnesses:

P. I. MORAN, GEORGE BUoKLnn.

